﻿
function Expo (){}

Expo.easeIn = function(t, b, c, d) 
{
	return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b - c * 0.001;
};

Expo.easeOut = function(t, b, c, d) 
{
	return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
};

Expo.easeInOut = function(t, b, c, d) 
{
	if (t==0) return b;
	if (t==d) return b+c;
	if ((t/=d*0.5) < 1) return c*0.5 * Math.pow(2, 10 * (t - 1)) + b;
	return c*0.5 * (-Math.pow(2, -10 * --t) + 2) + b;
};